[Alex1977]

In Shanghai, you can see easily the milky haze over the city, the smog is so thick that you may mistake the smog for an overcast day.

[Straight Vermonter]

I'm sure that is so but co2 sure isn't the cause.

[Cementjungle]

In Shanghai, you can see easily the milky haze over the city, the smog is so thick that you may mistake the smog for an overcast day

Los Angeles is like that a lot too.